Improvement in smoke-stacks for locomotives



diritti i 5mm J. A. w. JUsTI, or SAVANNAH, enen-GIA.`

Letters .Patent No. 83,506, dated October` 27, V1868. n

`'.'Llae Schedule referred to in these Letters Patent and making part ofthe same.

To all whoml it may concern Be it known that I, J. A. .'IUsfrI, ofSavannah, in the county of Chatham, and State of Georgia, have yinventeda new and useful Improvement in Locomotive Smoke-Stacks; and I do herebydeclare that the following is afull, clear, and exact descriptionthereof, which willenable others skilled in the art to make and use thesame, reference being had to the accompanying drawing, forming part ofthis specification, 'in which the drawing represents a sectionalelevation of my improved locomotive smoke-stack.

The object of this invention is to provide a locomotive smoke-stack withrsuch detaining-devices, that no coal, cinders, or sparks can passthrough it with the escaping smoke, while the draught is not in theleast impeded.

` The invention consists in the arrangement of the aforesaiddetaining-devices, and more particularly in an annular grate, which willmost eifectually prevent sparks from passing upward through the chimney.

A, in the drawing, represents the outer sheet-metal shell of alocomotive, said shell beingof ordinary-or suitable form and size, andsecured in a suitable manner to the locomotive.

Through the lower end of the chimney, is fitted a smaller pipe, B, withan enlarged upper end, a,as shown.

This innev pipe extends upward, somewhat above the middle ef thechimney, and reaches also below the lower end of the same. The lower endof the chimney-case A is closed around the pipe B, by an annular plate,b.

O is a conical sheetmetal cap, fitted above the pipe B, and secured, bymeans of brackets'c, to the same., Its edge isv rounded and turned in,as in the drawing, and is about one inch lower than the upper edge ofthe The object of the cap C is to arrest the cinders and heavysubstances that may arise in the smoke-pipe B, and to conduct those thatmay be carried over the edge of B to the annularspace d, formed aroundthe lower part of the pipe B, above the plate b. From such annularspace, the substances may be withdrawn through aA pipe, c.

D is an annular plate, fastened with its outer, higher edge to theshell'A, so as to be in contact with the same while its inner edge islower, and is free from'contact with any other part of the apparatus.

The plate D will form an arrester or stop for such coal, sparks, orcinders, as may rise in 'the chimney along the shell A.. I E is asheet-metal ring, inclined also, but in the opposite direction, asl);that is, its lower edge is the outer, and its upper edge the inner one.It is, by means of angle-irons fj', fastened to the shellvA, above the.ring I), as shown, its outer edge being about one inch distant irom theshell.

Its upper inner edge is bent downward, to 'arrest sparks that maybeblown up along its lower face, and it is distant from the shell, for thepurpose ofallowing heavy substances from above to roll down on it, andon the ring D, to the lower part of the chimney.

F is aconieal cap, iitted over and above the ring E,

and resting upon brackets g g, that project from the shell, as shown. Ithas its edge turned in, to prevent sparks, dto., from being, by thedraught, carried around the edge, and is about one inch distant from theinner side of the shell, as shown.

Upon the cap F rests an upright sheet-metal ring, G, which hasangle-irons or feet h h, at its lower edge,

resting lon the cap F, as shown, so that, thereby, the

' being blown into the inner side of Gr.

l Near the lower edge is fastened, to the inner side of the ring G, bymeans of rivets or otherwise, a shorter ring, K, which is aboutone-sixteenth part of an inch distant from the ring G,and toA the innerside of K, is, in a similar manner, fastened another ring K1, and thus,seven, or more or less, rings K, K1, K2, 85o., arearranged, the innerone having its lower edge always `a little higher than the one to whichit isfastened. The .innermost ring, K4, is attached to the under lsideof a plate, H, which has a nm, l, projecting beyond K4, as shown. A p

The distance between the various rings K, K2, 85o., is determined bymeans of washers interposed between them.

Instead of being separate rings, this grate, Ktc., can be formed by onenarrow band woimd spirally in the requisite form, the windings beingabout one-sixteenth of an inch apart nom each other, and graduallyrising, as shown. Sparks cannot readily pass through this' grating, andif they do, they will be arrested by the projecting flange l, or by thecover of the shell.

The covering-plated of the shell has a central aperture, around ,whichan upward-projecting tring, m, is arranged. Said ring is made ofopen-work, as shown, and has its upper part outward bent. to secure anuninterrupted draught.

Across the central aperture-.otl the plate z', is fitted a cross, n,from which a bolt or screw, o, is suspended, for connecting the cap, F,with the plate H, in the manner shown. l

Under the plate i, projects around' the central aperture, downward andoutward, an annular plate, p, for

arresting sparks that may have succeeded in arriving above the plate H.

It will be noticed that it is almost an impossibility for a spark orashes to issue from the 'orifice of the smoke-stack, and an actualimpossibility for coal or cinders.

Having thus described my invention,

I claim as new, and desire to secure by Letters H, sind ring,r y, dlarranged substantially :is herein Patent shown and described.

1. The grate formednby the rings K,K, 85e., or their 3. The @zips O zindF, and the ring E, constructed equivalent, arranged in the ring G, :indunder the plate with inward zuid downward-bent inner edges, snbstfin-`H, substantially is described, and fitted into t-lie smoketizilly :isherein shown and described. stack 0f :i locomotive, for the purpose ofarresting J. A. W. JUSTI.

sparks, ashes, lire., as set forth. Witnesses:

2. The combination, within the smoke-stack of zi JOHN WGHANKA,locomotive-engine, of the pipe B, having :in enlarged Jos. MARKWALTER,upper end, of the een C, ring D, deeetor E, cap F, Trios. J. BULLOCH-ring G, plates K K1, 3m., or their equivalents, plate

